# CVE-2026-106127: Progress KendoReact prototype pollution in setter utility

Source: https://junglewise.ai/threats/cve-2026-106127-prototype-pollution-in-the-setter-utility-progress-kendo-react  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-06. Updated: 2026-11-06  
License: CC BY 4.0 with a link back

CVE-2026-106127 · Severity: medium · CVSS 4.1 · Published 2026-11-06

KendoReact is a library of React UI components used to build web applications. A prototype pollution vulnerability in its setter utility allows an authenticated attacker with control over field paths to modify core JavaScript objects, potentially affecting application behavior, data integrity, or availability across all users of the application.

Technologies: [Progress Software KendoReact](https://junglewise.ai/threats/technologies/kendoreact). Vendors: [Progress Software](https://junglewise.ai/threats/vendors/progress-software).

## Quick answers

**Is CVE-2026-106127 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-106127 being exploited in the wild.

**How severe is CVE-2026-106127?** Medium severity, with a CVSS score of 4.1, published 6 November 2026.

**Which products and versions are affected?** Progress Software KendoReact 3.5.0 through 16.0.0.

**Is there a fix for CVE-2026-106127?** Yes: fixed in 16.0.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-106127 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-106127?** Check whether you run Progress Software KendoReact at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 16.0.1 or later

## Technical details

The setter utility in @progress/kendo-react-common fails to sanitize field paths, allowing prototype pollution of built-in JavaScript objects. An attacker with high privileges who can control field path inputs—either directly or through Form, Scheduler, and Gantt components—can inject properties into Object.prototype or other built-ins, causing limited impacts to confidentiality, integrity, and availability. This requires authentication and field-path control but no user interaction.

## Affected products

- Progress Software KendoReact 3.5.0 through 16.0.0

## Timeline

- 2026-11-06: disclosed

## References

- [https://www.npmjs.com/](https://www.npmjs.com/)
- [https://www.telerik.com/kendo-react-ui/components/knowledge-base/kb-security-prototype-pollution-cve-2026-106127](https://www.telerik.com/kendo-react-ui/components/knowledge-base/kb-security-prototype-pollution-cve-2026-106127)

## Related threats

- [Progress KendoReact Editor cross-site scripting](https://junglewise.ai/threats/cve-2026-106142-cross-site-scripting-xss-in-the-editor-component-progress-kendo)
- [Progress KendoReact Chat component cross-site scripting](https://junglewise.ai/threats/cve-2026-106136-cross-site-scripting-xss-in-the-chat-component-progress-kendo)
- [Progress KendoReact Menu cross-site scripting](https://junglewise.ai/threats/cve-2026-106134-cross-site-scripting-xss-in-the-menu-component-progress-kendo)